PPT-The Bioelectric Potentials(contd.)

By Somesh Kumar Malhotra Assistant Professor ECE DepttUIETCSJM University EEG EEG EEG Brain waves classification For obtaining basic brain patterns of individuals subjects are instructed to close their eyes and relax. This table is adapted from table 214 of the IPCC Fourth Assessment Report 2007 The 4 th assessment report values are the most recent 2007 but the second assessment report values 1995 are al so listed For more information please see the IPCC website Introduction These Guidelines are limited to the neurologic ap plications of short latency auditory evoked poten tials ie to the use of these responses to detect and approximately localize dysfunctions of the auditory pathways within the auditory ne 741 ISSN 0212-1611 Learning Objectives. To understand what factors affect the speed of conductance of an action potential.. To understand what the ‘refractory period’ is.. To understand what the role of the refractory period is in separating one impulse from the next.. Voltaic Cells. In spontaneous oxidation-reduction (redox) reactions, electrons are transferred and energy is released.. © . 2009, Prentice-Hall, Inc.. Voltaic Cells. We can use that energy to do work if we make the electrons flow through an external device.. ANSWER: via the endocrine and nervous systems. Why is it important for us to understand how cellular . c. ommunication works?. The Nervous . S. ystem: Parts & Pieces. Two cell types in the NS: 10% Neurons & 90% . The Most Beneficent The Most Merciful. 1. ECE 4552:. Medical Electronics . Lecture:. Electro . Encephalo. Gram. . Engr. . Ijlal. . Haider. Electrical Engineering Dept.. University of Lahore, Lahore. M. Pawan Kumar. pawan.kumar@ecp.fr. Slides . will be available . online http://. www.centrale-ponts.fr. /personnel/. pawan. /. About the Tutorial. Emphasis on ‘optimization’. A bit math-y. M. Ade-Up, N. Ames. . potential, conductance. There are two types of electrical . potential:. - . Action potential (propagated . inpulse. ). - . Electrotonic. potential (. non-propagated local potential, resulting from a local change in ionic . and Synapses. Brain and Behavior. David Eagleman. Jonathan . Downar. Chapter Outline. The Cells of the Brain. Synaptic Transmission: Chemical Signaling in the Brain. Spikes: Electrical Signaling in the Brain. Why are thermodynamic potentials useful. Consider U=U(T,V). Complete knowledge. of equilibrium properties of a simple thermodynamic. System . requires in addition. P=P(T,V). equation of state. U=U(T,V) and P=P(T,V). . E. . = . -. f. . . . Scalar Potential . f . and Electrostatic Field . E. . .  . x . E. = -. ∂. B. /. ∂. t . Faraday’s Law.  x -. . f . = 0 ≠ . -. ∂. B. /. ∂. t . HONORS ANATOMY & PHYSIOLOGY. Key terms. action potential. : A short-term change in the electrical potential that travels along a cell (such as a nerve or muscle fiber); the basis of neural communication. Over the past several decades, much progress has been made in understanding the mechanisms of electrical activity in biological tissues and systems, and for developing non-invasive functional imaging technologies to aid clinical diagnosis of dysfunction in the human body. The book will provide full basic coverage of the fundamentals of modeling of electrical activity in various human organs, such as heart and brain. It will include details of bioelectromagnetic measurements and source imaging technologies, as well as biomedical applications. The book will review the latest trends in the field and comment on the future direction in this fast developing line of research.